Conveyer for book-stitching machines.



M. CHRISTENSEN.

CONVEYER FOR BOOK STITCHING MACHINES.

APPLICATION FILED APR.6,i917.

1,297,322. Patented Mar. 18,1919.

I N W [W AT TURNEYE TINTTED STATES PATENT OFFICE.

MARTIN CHRISTENSEN, OF RACINE, WISCONSIN, ASSIGNOR T0 CHRISTENSEN MACHINE COMPANY, OF RACINE, WISCONSIN, A CORPORATION OF WISCONSIN.

I CONVEYER FOR BOOK-STITCHING MACHINES.

Specification of Letters Patent.

Patented Mar. 18, 1919.

Application filed April 6, 1917. SerialNo. 160,171.

To all *uihom it may concern:

Be it known that I, MARTIN CHRISTEN- sEN, a citizen of the United States, and resident of Racine, in the county of Racine and State of Wisconsin, have invented new and useful Improvements in Conveyers for Book- Stitching Machines, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

The invention relates to conveyers for book-stitching machines.

Conveyers for machines of this character are used for carrying groups of signatures from the alining mechanism to the stitching mechanism. In ordinary machines of this type the signatures are placed upon a fixed inverted V-shaped saddle and moved therealong by pins carried by an endless belt within the saddle. This manner of feed is objectionable because of changing of the position of the signatures with relation to each other, due to frictional contact with the fixed saddle, with the result that the signatures are out of line when they reach the stitchers. To overcome this difficulty I have provided a movable saddle comprising a plurality of saddle members connected together to form the conveyer said connection preventing sagging of the upper run of the conveyer when runnin in a straight path with respect to each ot er.

The invention further consists in the sev eral features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

Figure l is a side view of the device embodying the invention, parts being broken away and parts being shown in section;

Fig. 2 is a detail bottom view of a portion of the conveyer;

Fig. 3 is a section taken on the line 33 of Fig. 1;

Fig. 4: is a section similar to Fig. 3 showing the conveyer used with a different form of guide.

The conveyer driven in any suitable manner, is mounted on sprockets carried by any suitable frame and for detailed explanation of a type of frame which may be used with the conveyer reference is had to my Patent No. 1,140,734 granted May 25, 1915. In the drawings I have shown a portion of the rear standard 9 which carries a chain tightener frame 11 which is provided with a sprocket wheel 12 and one of the tightener bolt members 14 which extends through the standard 9 and 'is adjustably secured thereto by nuts 16.

The conveyer consists of a plurality of what might be termed arrow-head shaped members 15 consisting of an inverted V- shaped saddle portion 6, inwardly extending portions 7-, and depending spaced apart flanges 8, said portions 7 and 8 forming shoulders 9. The several members 5 are connected together to form an endless conveyer by links pivotally secured to the medial portions of said members within and without the same. Links 10 are pivotally secured within the space between the flanges 8 by means of pins 11 and links 12 adjacent the end of adjoining members are secured on the outside of the flanges by said pins 11 so that their upper edges abut against the shoulders 9 and thus prevent downward vertical movement of said members to prevent sagging when running in a straight line and allowing a limited upward vertical movement when led over a round support whereby any liability of disarranging or catching the signatures between the members is prevented. i

The upper run of the conveyer is guided either by a straight bar 13 disposed between the flanges 8 and over which the links 10 run or by a channel bar 14 inclosing the lower flange portion of the members the lower edge of said flanges running on the web of the channel bar.

It will also be noted that the width of the saddle members 5 adjacent the guide means is greater than the width of the guiding means, that is the apices 16 of these members project beyond the guide means so that the sheet carried by the saddle is spaced away from the guide means and frame thereby preventing any interference with or soiling from the guiding means and conveyer frame.

With this construction, it is only necessary to drop the groups of signatures onto the conveyer and they will be carried to the stitching mechanism in proper alinement by pins 17 and without comlng into contact with the other parts of the conveyer and without liability of the signatures being disarranged or caught between the members of the conveyer due to the vertical move ment of said members with respect to each other as relative movement of said members is prevented on the upper run of the conveyer. Y

I am aware that the specific construction herein shown and described is capable of. some modification and 'I' therefore desire it to be understood that such changes as come within the scope of the appended claims are Within the spirit of my invention.

What I claim as my invention is:

1; In a signature. conveyer, thevcombination of a plurality of signature supporting elements having inverted V-shaped signature supporting surfaces and lengthwise extending shouldered.portionsrbelow said supporting surfaces,-and' means for securing said element's together in, abutting relation to form a smooth COILtIDUIOHSSHPPOItIDg surface for the groups of signatures and for preventing sagging of. the conveyer, comprise. mg anendless chain to which each. of said elements are secured intermediate thelr ends Copiesof this patentimay be o'btained for prising a plurality of inverted V-shaped shoulders and pivotally connected to said first named links, and means for guiding the upper run of the: conveyen 3; The combination, with supporting means ot a conveyer! mounted: thereon com.-

prising arpl'urality of= inverted; V-shaped members provided with lengthwise extendlmovable saddle, portions of-jsaid; endless chain abutting against saidashoulderedapom tions to prevent, sagging; of:' the: conveyer,

and means for guiding/the .upperrun' of; the

conveyerr,

In testimony whereofi I'afliXmy' signature.

, MARTIN, CHRISTENSEN, v

fi ts each, by addressinggtheGon niisslonerpf; latent-s, Washington, D. G.-- 

